(2) Pretreatment: Paint the line on the racket face with talcum powder or wax in advance to prevent the machine from pulling the line with great friction and reduce the service life of the line. Wrap the longitudinally reserved thread around the seventh or eighth hole from the handle, and then tie a fast knot at the thread end that cannot pass through the hole. I remember that when the knot is gently pulled to the bottom of the hole by hand, there are still ten to twelve centimeters of thread exposed between the seventh and eighth holes and the twelfth hole (counted from the handle).
(3) On the machine: fix the racket face on the frame, and then lock the screws. The racquet face must be kept steady or the racquet frame will be deformed during the racquet, and then adjust the weight according to the number of pounds you need (if it is an electric threading machine, it can be set directly). If the manual threading machine rusts, the number of pounds worn will be higher than the original setting. Pull the vertical line from the head knot every other line, so that the strength can be shared by the two lines. Then fix it with a fixing clip, continue to pull down the next thread until the horizontal thread reaches the last thread, then wrap the thread around the straight line counting from the tip of the racket to the sixth or seventh hole, tie it with a tail knot, and finally tighten it.
(4) Precautions:
When the racket frame is on the line, the intersection of the vertical line and the horizontal line should be as parallel as possible, and do not cross to prevent the horizontal line from being pulled out after the vertical line is tightened.
The tail knot should be handled carefully, because the hitting point is at the tip, so it is not tied well and will be broken soon. If it is not fastened, it will fail and waste a thread.